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very simple, go and read NEWTONS FIRST LAW!
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How much force is needed to hold up a 20kg bag of sand?
About 20kg of force.
Why does the input force have to be greater than the force needed to lift the bale?
Friction increases the effect of the input force
What is a fixed single pulley that is used to lift a block?
It makes the block easier to lift by changing the direction of the force needed to lift it.
How does a movable pulley reduce the input force needed to lift a weights?
a lever
How much force is needed to lift a 400 g mass is?
0.4 Newtons
How much force is needed to hold up a 20kg bag of sand?
About 20kg of force.
Why does the input force have to be greater than the force needed to lift the bale?
Friction increases the effect of the input force
What is a fixed single pulley that is used to lift a block?
It makes the block easier to lift by changing the direction of the force needed to lift it.
Why does the input have to be greater than the force needed to lift the bale?
Friction increases the effect of the input force
How much down force is needed to lift a helicopter?
The same force as the weight of the helicopter and its crew and cargo.
Can the number of pulleys affect the amount of force to lift a heavy objects to a high place?
Increasing the number of pulleys divides the force required to lift up a heavy object; increasing the number of pulleys decreases the force needed by the person (or motor) pulling the first end of the pulley system. However, it is important to know that it does not affect the total work needed to lift up the object. As the force is decreased, the distance of rope needed increases to compensate for a conserved amount of work required for the load to be lifted.
How does a movable pulley reduce the input force needed to lift a weights?
a lever
How much force is needed to lift a 400 g mass is?
0.4 Newtons
If you put a book bag on a resistance arm of a lever what would you need to do to decrease the work input needed to lift the book bag with the lever?
a fulcrum.
A fixed single pulley that is used to lift a block does what?
The choices are:A. Doubles the force required to lift the blockB. Decreases the force required to lift the blockC. Makes the block easier to lift by changing the direction of the force needed to lift it.D. Decreases the force required and changes the direction of the force required
How does the number of supporting ropes on a pulley affect the amount of force needed to lift the load?
The more pulleys and ropes you add the easier it is to lift
How many pounds of force does it take to lift a 100 pound man out of corn up to his waist?
If you have a man submerged up to his neck in corn and you want to know how many pounds of force it will take to lift him out, information about the volume, weight, mass, density would be needed in order to calculate the force needed.
